noun
Refers to a pocket in clothing, bags, or similar items. Also used in compound words like ポケットティッシュ (pocket tissue).
上着のポケットに鍵を入れた。
I put the key in my jacket pocket.
このズボンにはポケットがたくさん付いている。
These pants have a lot of pockets.
袋 is a more general word for bag or sack, while ポケット specifically refers to a pocket sewn into clothing or a small compartment.
Loanword from English 'pocket'.